Re: [EE] Inductance equation for a multi-layer solenoid by Matthew Miller .

On Sat, Mar 19, 2005 at 09:58:12PM -0800, William Chops Westfield wrote: > > On Mar 19, 2005, at 9:44 PM, Martin K wrote: > > >>I'm trying to design a multi-layer solenoid wrapped > > Are you actually talking about a solenoid (which at least to me > implies a movable core and complex electro-mechanical interactions), > or just a multi-layer cylinder inductor? The design is a multi-layer cylindrical inductor, I've been using the term solenoid since that is also the term my physics book uses, and lots of other web sites as well. I'm starting to agree with some other responders that I'm going to have to make some test windings. I've not been able to find a relative permeability value for chrome steel... Also, anyone know of a good circuit to measure inductance up to about 40mH? The cirucits I've found so far don't measure that high. Everyone thanks for your help! Matthew -- When in danger, or in doubt, run in circles, scream and shout. -- Robert A. Heinlein